1boy, 1girl, anger vein, arona's sensei doodle (blue archive), ass, bangs, bare arms, bare legs, bare shoulders, bent over, blue archive, blush, breasts, buruma, cameltoe, exercise, from behind, greyscale, gym uniform, halo, long hair, looking at viewer, medium breasts, monochrome, official alternate costume, partially visible vulva, ponytail, presenting, ramanda, sensei (blue archive), shirt, shoes, simple background, sit-up, sneakers, spread legs, sweat, wide spread legs, yuuka (blue archive), yuuka (gym uniform) (blue archive)